Results 21 to 30 of about 413,327 (305)
Frequency-domain-based complete loss model for 10 kV/1 MW solid-state transformer
The Journal of Engineering, 2019 This study proposes a frequency-domain-based loss model for dual active bridge (DAB) inside modular multi-level cascaded solid-state transformer (SST). Previously, the loss model is mainly derived in the time domain and requires enormous modelling effort.
Tao Liu +6 more
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AC vs. DC Boost Converters: A Detailed Conduction Loss Comparison [PDF]
, 2019 Studies have shown the efficiency benefits of DC dis- tribution systems are largely due to the superior performance of DC/DC converters. Nonetheless, these studies are often based on product data that differs widely in manufacturer and operating voltage.
Gerber, Daniel, Musavi, Fariborz
core +3 more sources
Bone Conduction Improvement After Surgery for Conductive Hearing Loss [PDF]
Indian Journal of Otolaryngology and Head & Neck Surgery, 2011 The objective is to evaluate change in post-operative bone conduction in patients who underwent surgery for conductive/mixed hearing loss due to various reasons. The study design is of retrospective case review and tertiary referral center setting. Five-hundred patients with unilateral conductive/mixed hearing loss were divided into five equal groups ...
H, Vijayendra, Bhavin, Parikh
openaire +2 more sources
Semiconductor loss calculation of DC–DC modular multilevel converter for HVDC interconnections
High Voltage, 2018 DC–DC modular multilevel converter (DC–DC MMC) is an attractive candidate for high-voltage DC (HVDC) interconnections since it can provide the required voltage matching, galvanic isolation and flexible power control abilities.
Shanshan Zhao, Yu Chen, Li Peng
doaj +1 more source
Evaluation of Frequency and Temperature Dependence of Power Losses Difference in Parallel IGBTs
IEEE Access, 2020 With the development of high power converters, safe operation of IGBT modules with parallel chips is of increasing importance. IGBT can work normally in safe range in the initial operation even if current imbalance is happening.
Jianxiong Yang +3 more
doaj +1 more source
Modeling Inverter Losses for Circuit Simulation [PDF]
, 2004 Transformer-like inverter models can represent a very good alternative to common switch-diode models for simulation, reducing convergence problems and/or calculation time.
Fratta, Antonino, Scapino, Federico
core +1 more source
CONDUCTIVE HEARING LOSS IN BIGHORN SHEEP [PDF]
Journal of Wildlife Diseases, 1995 In January 1993 we simulated a conductive hearing loss in three Mexican bighorn sheep (Ovis canadensis mexicana) by placing bone wax or saline solution in their ear canals. Our objective was to test whether lesions of the external auditory canal caused by psoroptic mites (Psoroptes ovis) may lead to conductive hearing loss in bighorn sheep. We assessed
Norrix, L. W. +4 more
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Audiology Research, 2021 Sound localization in daily life is one of the important functions of binaural hearing. Bilateral bone conduction devices (BCDs), middle ear implants, and cartilage conduction hearing aids have been often applied for patients with conductive hearing loss
Kimio Shiraishi
doaj +1 more source
New patents on topical anesthetics. [PDF]
, 2014 Anesthesia is defined as a total or partial loss of sensation and it may be general, local or topical, depending on the method of drug administration and area of the body affected.
CALVIERI, Stefano +6 more
core +1 more source
The Launching of Cold Clouds by Galaxy Outflows. V. The Role of Anisotropic Thermal Conduction
The Astrophysical Journal, 2023 Motivated by observations of multiphase galaxy outflows, we explore the impact of isotropic and anisotropic electron thermal conduction on the evolution of radiatively cooled, cold clouds embedded in hot, magnetized winds.
Marcus Brüggen +2 more
doaj +1 more source